Biscuit cutting and embossing machine



Dec. 9, 1930. T. L. GREEN BISCUIT CUTTING AND EMBOSSING MACHINE 7 Sheets-Sheet 1 Filed June 1, 1929 INVEN TOR I ZM'MI ATTORNEY Dec. 9, 1930. 'r. L. GREEN BISCUIT CUTTING AND EMBOSSING MACHINE Filed June 1, 1929 T Sheets-Sheet 2 Dec. 9, 1930.- T. L. GREEN BISCUIT CUTTING AND EMBOSSING MACHINE v 7 Sheets-Sheet 4 Filed June 1, 1929 INVENTQRI ATTORNEY Dec. 9, 1930. T. L. GREEN BISCUIT CUTTING AND EMBOSSING MACHINE Filed June 1 1929 7 Sheets-Sheet 6 Www 22/ Q INVENT OR ATTORNEY Dec. 9,1930.

T. L. GREEN BISCUIT CUTTING AND EMBOSSING MACHINE Filed June 1, 1929 '7 Sheets-Sheet '7 Patented Dec. 9, 1930 him,

THDMAS ZUTHER GREEN, OF INDIANAPOLIS, INDIANA BI$GUIT CUTTING AND EMBOSSING MACHINE Application filed June 1, 1929. Serial No. 367,684.

The invention to be hereinafter described relates to a machine for cutting and embossing biscuits, and is an improvementuponthe machine disclosed in Letters Patent No. 1,660,553, grantedto meFebruary 28, 1928.

In saidmachine a sheet of dough or other plastic material is fed by an endless web or apron beneath vertically reciprocating cutters and embossers mounted on a carrier,

3 which in-the case of a continuously fed apron is recipro-cated' sothat the cutters and em bossers are moved in unison with the travel of the sheet when acting thereon. A cross head reciprocates vertically on the carrier,

' and detachably connected with thecross-head is a unit comprising a cutter-head carrying cup-shaped cutters, an embosser-head carrying enibossers within the cutters, and a clearer plate. The embosser=head is supported on the clearer plate by coil springs encircling studs mounted on and projecting up from the clearer plate and having heads at the upper ends thereof. The clearer plate is carried by the cutter-head and is provided with studs rising from the clearer plate and having heads at the upper ends thereof. Coil springs encircle these studs and urge the clearer plate downward relatively to the cut er-head until limited by engagement of the.

tion of the coil springswhich are'interposed between the clearer plate and the embosserhead, thereby energizing said springs. The instant the embossers have made their 1mpress upon the dough sheet, the toggles are buckled, and the energized springs become effective quickly to move the embossers up away from the dough sheet. To intermittently'biwklethe toggles and'release the shoes from the embosser-head, latch trip mechanism is employed, which is a good operable means for the purposes, but objectionable vibration, noise and wear are occasioned thereby.

In my copendingapplication Serial No. 353,571, filed'April 8, 1929, is disclosed improved ineans for controlling the toggles comprisinga pair'of eccentrics locatedwithin the cross-head and connected to the hinge pins of the toggles by connecting'rods. To give the eccentrics an oscillatory motion for alternately buckling and approximately straightening the toggles, a doublecrank motion is provided and so designed that high speed rocking movement is given to the eccentrics quickly to buckle the toggles, snatch the shoes up,,and allow lifting of the embossers by the embosser-head springs the instant the embossers have made their impress on the dough sheet.

A purpose of'the present invention is to further simplify and modify the machine, and more particularly the means for com trolling the embosser-hea'd. The construction is such that the embosser-head is positively reciprocated vertically relatively the cutter head, and" the embosserhead lifting springs and parts associated therewith em ployed in the machines above referred to, are eliminated.

The character of the invention may be best understood by referenceto-the following description of one good embodiment thereof shown in the accompanying drawings, wherein:

Fig. 1 is a front elevation of a portion of a biscuit cutting and embossing machine embodying the invention;

Fig. 2 is a vertical transverse section throughthe machine showing the cross-head. the cutter and embosser unit and other parts in side elevation;

Fig. 3 is a plan of the cross-head, and shows the devices for alining the cross-head with the bed plate, and for adjusting the toggles and the einbosser-head for-embossing dough sheets of various thicknesses and for making impressions of various depths thereon; i

Fig. 4 on an enlarged scale is a trans- "verse section'ta-ken on line 4+4 of Fig. 3;

Fig. 5 on an enlarged scale is a transverse section taken on line 5-5 of Fig. 3;

I Fig. 6'is an elevation showing the mechanism for oscillating the mitre gears, rock shafts and eccentrics; 1 i

.Fig. 7 is a plan ofan end portion of the cross-head showing one of its eccentric adjusting sleeves in section, and showing the bracket carrying part of the mechanism for oscillating the mitre gear shafts;

buckled condition Fig. 8 is an elevation of the portion of I t the cross-head shownin Fig. 7, and a vertifcal sectlon'through the eccentric sleeve and bracket; I

- Figf9on'an enlarged scale is avertical sectionthrough the cross-head box and show: ing the positions ofthe eccentrics, connecting rods and toggles when the latter are in approximately straightened condition;

' Fig. 10 isa view similar to Fig. 9 showing the positions of the eccentrics, connecting rods and toggles when the latter are; in

Fig. 11 is aview of the two eccentrics;

Fig. 12 is a view partly in verticalsection and partly in elevation of the unit compris ing thehead carrying the cutters, the head carrying the. embossers,the clearer plate and coil springs for the latter;

Fig. 13 is a vertical transverse section taken on line 13 13 of Fig. 12;

, Fig. 13a is a plan of a portion'of thefcutterandembosser unit; and

Figs. 14, 15'and 16 are diagrammatic views. to facilitate understanding of the operation of the embosser control mechanism.

, Referring to the drawings, the portion-0f the b scult cutting and embossing machine shown therein as one good form of the ine vention comprises a pair of side plates 1' (Figs. land Qlwhich extend the length of themachine and carrythe usual rollers and driving mechanism (not shown) for. causing the travel of theendless apron 3, the upper run of which conveys the dough sheet'beneathlthe cuttersand embossers. g I

Cutters 5.(Fi'gs'.' v2, 12 and13) are provided,'in'the apresent instance of cup form. Within the cutters are embossers 7 ,iin the present instance of plunger form.- The cuttersare secured to a 'channeLshapedcutter-I head 9 provided with a pair of yokes 11 bridging the flanges of the cutter-head adj acent opposite ends thereof. The embossers aresecuredto the lower ends of stems which are entered through holesin the boto tomrof the eutter-head,the upper ends of saidstems, being secured to an embosser-head 15 vertically reciproca-ble between the flanges of the channel-shaped cutter-head, and prevented from moving longitudinally relatively to the cutter-head by ribs 16 (Fig. 13a) rising from the cutter-head and engaging endsof theembosserehead.

Beneath the cutter-head is a clearer plate 17 having holes for receiving the cutters, and

securedto and rising from the clearer plate are studs 19 which pass through pockets 21 in the cutter-head and have heads 23 at the upper end thereof. Coil springs 25 encircle the studs, enter the pockets, are confined between the clearer-plateiand the upper ends of the pockets, and ur e the clearer plate downward untillimitec by engagement of the stud heads '23 with the upper surfaces of the cutter-head flanges.

The cutter carrying head, the embosser carrying head; the clearer plate and the studs and springs for the latter constitute a unit adapted to be detachably secured to a cross- 7 head (Figs. 2, 3 and 12). To accomplish this, bolts 37 are provided extending vertically through. the cross-head and having at their lower ends heads 39 entered into hori- Zontal slots 41 in the cutter-head yokes 11 referred to, said bolts having nuts 43 enga ing the topof the cross-head. The construction is such that the unit may be presented to the cross-head and adjusted laterally to cause, the; slots 41 to slide along the bolt heads 39 until limited by en agement of the ends of the slots with the b0 ts. Thereupon the mits43 may be. tightened securely to connect the unit to :the cross-head: The machine may be equipped'with a complement of cutter and embosser units for work of varying character, the construction being The upper ends of the rocker -.arms are connected to a saddle 49 carrying abed plate 5I over which the upper run of the apron passes, a suitable. pad 53 being interposed between the bed plate and the upper run of the aP n-, f

Mountedon the saddle at opposite ends thereof are stands 55 having guideways 57 in which the cross-head is adapted to reciprocate verticallyjQoil springs 59 aremounted in deep cups 61 and have upper ends engagin i-ng the cross-head yieldingly to supportthe latter. I H I To reciprocate the cross-head in the guideways of the stands, connecting rods 63. (Figs.

1 and 2) are provided having heads 65 con-- nected to the cross-head, and heads 67 provided w th straps receiving crank wrist pins 69' on main shaft 71 journalledv in hearings in the side'plates and drivenin any suitable manner. Ball bearings 73 are provided between the strapsand wrist pins.

The means for horizontally reciprocating the cutter and embosser carrier'comprises a disk 75 mounted on the front end of the main shaft 71 and having a wrist pin 7 7 connected by a connecting rod 79 with the lowerend: of one of a pair of rocker arms 81 mounted on a shaft 83. On the upper ends of the rocker arms are blocks 85 connected by links 87 with the saddle 49; The extent of oscillation of the cutter and embosser carrier may be varied by adjusting the blocks 85 along the rocker arms by means of a hand wheel 89 operating through mitre gears and screws 91 as is understood in the art.

It is desirable to adjust the cross-head in order that it may beproperly alined with respect to the bed plate and the dough sheet.

' To accomplish this, eccentric sleeves 93 (Figs.

6, 7 and 8) are interposed between the trunnions 95 of the cross-head and bearings 97 in the upper connecting rod heads 65.

Formed integrally with the eccentric sleeves are worm gears 99 (Figs. 3,7 and 8) meshing with worms 101onshort shafts 103 journalled in hearings on the upper connecting rod heads 65. Fast on said short shafts are worm gears 105 meshing with worms 107, one on a sleeve shaft 1-09-journalled in bearings in brackets 11.1 projectingfrom the upper connecting rod heads 65, and the other on a shaft 113 in the sleeve shaft. 'Fast on the sleeve shaft 109 is a hand wheel 115, and fast on the shaft 113 is a crank 117. The hand wheel and crank may be connected by a spring-pressed pin 119 when it is desiredequally to adjust the ends of the cross-head, and on Withdrawal of the spring-pressed pin from the hand wheel, said ends may be adjusted independently as desired.

Cal

Next will be described the mechanism for reciprocating the embosser-head relatively to the cutter-head. To accomplish this lugs 121 2, 9, 10 and 12) are formed integrally with the embosser-head and are provided with pins 123 (Fig. 1) connected to toggles each comprising a lower link 129 and an upper'link 131 pivotally connected to shafts 132 journalled in bearings in the cross-head- The links 129 and 131 have meeting over-- lapping forked ends through which pass hinge-pins 135. The cross-head is formed to provide a boX 137 which receives the toggles and has openings through which the lower links of the toggles protrude.

The toggles may be adjusted in order that they may be set properly for embossing dough sheets of different thicknesses and for causing the embossers to make impresses in the dough sheet of various depths. Also this adjustment of the toggles-will compensate for any variation in the heights of the yokes which connect the cutter and embosser unit to the cross-head.

Toaccomplish this adjustment, the "toggle carrying shafts 132 have eccentric portions 133', and ends of the shafts extend out from the cross-head and have fast thereon worm gears 1 11 meshing with worms 1 13 (Figs. 2 and 4), one on a sleeve shaft 145 journalled in hearings on the cross-head and the other on a shaft 147 having a portion thereof in the sleeve shaft 145. Fast on the sleeve shaft 145 is a hand wheel 149, and fast on the shaft 147 is a crank 151. The hand wheel and crank may be connected by a springpressed pin 153 when it is desired equally to adjust the toggles, and said pin may be withdrawn from the hand wheel independ: ently to adjust the toggles as desired.

The hinge pins 135 of the toggles are connected by connecting rods 155 with a pair of eccentrics 157 (Figs. 5, 9, 10 and 11) having the bushing 169, and on the other end of the shaft is a mitre gear 17 3 meshingwith a mitre gear 17 5 (Figs. 2 and 3) on a shaft 177 extending parallel to the crosshead and journalled ina bracket 179 secured to the cross-head. and in a bracket 181 (Figs. 2, 3, 7 and 8) secured to the rear trunnion of the cross-head by a fin 183 and screws 185, the fin being entered into a corresponding recess in the trunnion.

Fast on the rear end of the mitre gear shaft 177 is an arm 187 having a slot 189 therein receiving a slide block 191. A rock arm 193 has one end pivotally connected to the block and its opposite end pivotally mounted on a shaft 195 on the bracket 181. A connecting rod 197 has its upper end pivotally connected to the slide block and its lower end pivotally connected to a crank wrist pin. 1 99 on a disk 201 secured to the crank wrist pin 69 on the main shaft 71 at the rear side of the machine.

The construction is such that on rotation of the disk 201, the connecting rod 197 will operate through the slide block, slotted arm and rock arm to oscillate the mitre gear shafts-and the eccentrics, thereby alternately to buckle and straighten the toggles and move the embosser-head up and down With positive action.

The operation may be more readilyunderstood by reference to the diagrammatic Figures-14, 15 and 16. For convenience the line 203 may be regarded as the upper surface'of' the dough sheet, 205 designates one of the embossers, and 207 designates one of the cutters; When :the embosser'is about toenf gagethe dough sheet, the eccentrics, slotted, armyrock arm, embosser crank" in 199 and cutter crankpins 69' will be in t iepositions,

shown'in Fig. 14;: 'The embosser crank pin 'isjabouttomove through an arc of its Orbit which willimpart the most rapid longitudinalmove nent to the connectin rod'197, and

the block in-the slotted arm will be approach I ing its position of shortest effective radius.

On turning of the eccentrics to the position v shown in Fig. 15, the embosser'crank pin 199 will. be in a position in its orbit'still nearer I to thefportion thereof whore itis effective to impart highest speed longitudinal movement tothe connecting rod 197, and the slide bloc-k 1 in the slotted arm will be still nearer to its shortest effective radius. The effective radius of theembosser crank pin199 is now considerably longerthan the effective radius of the slide block, and the movement of the former is multiplied at the latter. When the partsvare in their positions shown in Fig.

15,'the embosser is downto its lowest limitand isin engagementwith the dough: sheet.

Z Next the eccentrics receivetheir highest speed rocking movement in order quickly to buckle the toggles, andquickly lift the em bossers upfrom the dough sheet." Inthe course ofthis movement the embossers crank pin 199 :and the slide block will move from their positions shown in Fig. 15 to their posi tions shown in Fig. 16. It will be noted in the latterfigure that the slide block has-moved outward in the slotted armtoward the end thereof to its position of longest-radius. The cross-head continues to move down, thereby causing: the cutter to die'out the embossed i bis cuit from the dough sheet. The eccentrics restore the toggles to their straightened conare then rocked in theopposite direction to dition in readiness for the next cycle of operations.

\Vhenv the embosser is in its position shown in Fig.15 inengagement with the dough sheet, the cutter is about to enter the sheet 7 therein. On upward movement of the em b'osser, the cutter will clear the dough sheet from the embosser. In Fig. 16 the cutter is starting on its. upward movement and will move up beyond the embosser so that the latter vwillserve to clear the diedout biscuit from the cutter. The clearer plate will clear "from. the cutter the scrap surrounding the died-out biscuit. I

I TEnormous. pressure is brought to bear upon I the embosser-head the instant theembossers contact with the dough sheet,and therefore it a essential that the embossereontrolmecha ofrelatively light construction.

.Thetogglecontrol mechanism is simple in nism shall beof sturdy construction andyet 'oiiajdesign; in which partsare sufficientlyv light to enable. high speed operation. Wbenthe embosser head is underits-highest pressure, the toggles are approximately in straightenedcondition, and through the nearly'straight vertical lines of their. linksbearthe brunt. ofthis pressure. The lateral component transmittedthrough the connect.

ing rods, to .the eccentrics is relatively small as com-paredto'the pressure on the toggles, andthus the eccentrics, mitregears, the slot-v tedfarm andthe embosser wrist pin may be construction, and has a harmonious motion avoiding vibration and noise, and is'designed to withstand the dutywliich it is called upon to perform with minimum wear.

v This machine may be employed to 'einboss and die out biseuitsor merely to die outbiscuits i"; In the latter use the rock arm 193 and the connecting rod '197'may be removed. I

Thenthe slotted arm may be swung upward until its slot is in registration with an eye 2091 (Fig; 6) on the bracket 181. A pin-211 (Fig; is' mounted in the eye andhas apair ofcircumferential grooves213 adapted tobe engaged a spring-pressed ball 215, the construction'being such that the pin may be slid in the eye so that an end thereof enters the slot "189 of the"slotted-arm, thereby to hold said arm 'upininoperative position-" The spring-pressed'ball will enter one of the grooves'to hold: the pin inthe slotand. enter the other groove, to hold the pin in with drawn-position; i r

=When'the machine is used" to cut but not eniboss biscuits, a. cutter unit is substituted for the cutter and embosser unit, and is adapted merely tocut biscuits. The purpose of removing the rock arm and connecting rod is to relieve the togglesand their actuating mechanism from idle motion and "consequent wealt' V i WVhen it is desired to remove the cutter and embosser unit from the cross-head, the nuts 43 of the bolts 37 which hold the unit to the bar are loosened, and the pins 123 connectin the toggles with the'lugs121 are withdrawn, allowing swinging ofthe togglesfaway from the lugs. 'Now thenunit is free to be movedlaterally away fronith e bolts 37. 1

It will be observed that the toggles are directly connected with the lugswhieh are Q formed integrally with g the. embosser-head, .and'therefore, on oscillation of the eccentrics andalternate straightening andbuckling of the toggles,-the embosser-head will be positively reciprocated relatively to the cutterhead. The embossers: are positively' controlled in alltheir movements.

While tlie'machine has been described more particularly in respect to embossing and cutting out biscuits from a dough sheet,.other plastic materials might be operated upon.

It Will be understood that the invention is c not limited to the specific embodiment shown,

cross-head an embosser car *ied tierebfor embossing material, toggles carried bythe cross-head connectedxto the embosser, and

means for automatically, positively straightening and buckling the toggles to control the embosser.

2. A machine of the character described comprising, in combination, a reciprocable cross-head, an embosser carried thereby, toggles on the cross head connected to the embosser, and means for automatically straigh eningand buckling the toggles including a pair of eccentrics on the cross-head and connecting rods connecting the eccentrics with the toggles.

3. A machine of the character described comprising, in combination, a reciprocable cross-head, an embosser carried itliereby,;toggles on the cross-head connected to the embosser, and means for straightening and buckling the toggles includingeccentrics on the cross-head,-connecting rods connecting the eccentrics with the toggles, and means for oscillating the eccentrics.

4. A machine of the character described comprising, in combination, a reciprocable cross-head, an embosser-head carried thereby having embossers for embossing material, toggles carried by the crosshead and connected to the embosser-head, and eccen tric means for automatically, alternately straightening and buckling the toggles.

5. A machine of the character described comprising, in combination, a reciprocable cross-head; a unit carried by said cross-head comprising a cutter-head having cutters, and an embosser-head having embossers and reciprocable relatively to he cutter-head; and means for controlling the embossers including toggles carried by the cross-head and connected to the embosser-head, and means for automatically, alternately straightening and buckling the toggles.

6. A. machine of the character described comprising, in combination, a recipr cable cross-head, an embosser-head having embossers for embossing material, toggles carried by the cross-head and connected to the embosser-head, eccentrics on the cross-head, connecting rods connecting the eccentrics vith the toggles, and means for actuating the eccentrics to hold the toggle in straightened condition on advance of the cross-head toward the material, and for buckling the toggles to retract the embossers from the material on completion of the embossing operation.

7. A machine of the character described comprising, in combination, a reciprocable cross-head, an embosser-head carried thereby having embossers for embossing material, toggles onthe cross-head connected to the embosser-head, eccentrics on the cross-head, connecting rods connecting the eccentrics with the toggles, and means for automatically oscillating the eccentrics having provision for imparting rapid roclring movements thereto quickly to buckle the toggles to withdraw thepembossers from the material on completion or the embossing operation.

8. A machine of the character described comprising, in combination, a reciprocable cross-head, an embosser carried thereby for embossing material, toggles on the cross-head connected tothe embcsser, eccentrics on the cross-head, connecting rods connecting the toggles and eccentrics, and means including a crank motion for oscillating the eccentrics alternately to bnckle and straighten the toggles.

V 9. A machine of the character described comprising, in combination, a cross-head,en1- bossers carried thereby torembossing material, a shaft having cranks, connecting rods between the cranks and crosshead for reciprocating the latter, toggles on the cross-head connected to the embossers, eccentrics on the cross-head, connecting rods connecting the eccentrics withthe toggles, and means operated by oneof saidcranlrs for operatingsaid eccentrics to buckle and straighten the toggles. v

10. A machine of the character described comprising, in combination, a crosshead, em bossers carried thereby for embossing material, a shaft, means actuated by said shaftfor reciprocatingthe cross-head, toggles carried by the cross-head connected to the embossers, eccentrics on the cross-head, connecting rods connecting the toggles and eccentrics, and means operated by said shaft for actuating the eccentrics alternately to strai hten and buckle the toggles.

11. A machine of the character described comprising, in combination, a cross-head, embossers carried thereby for embossing material, a shaft having cranks, connecting rods extending between the cranks and cross-head to reciprocate the latter, toggles on the cross head connected to the embossers, eccentrics on the crosshead, connecting rods connecting the eccentrics and toggles, and means to oscillate the eccentrics including a shaft for the eccentrics, a rocl; haft on the cross-head, intermeshing gears on said shafts, an arm on the rock shaft having a slot, a slide block in said slot, a disk on one of said cranks having a wrist pin, and a connecting rod connecting the slide block with the wrist pin.

12. A machine of the character described comprising, in combination, across-head, embossels carried thereby for embosslng mate 'ria'hafshaft havingc-ranlrs, connecting rods.

-=extending between the cranks and the ,crossheadto reciprocate the latter, toggles on the {cross-head connected to the embossers, eccen- 1 i-trics on the ccross-head,connectin rods con- ,nec'ting the toggles and eccentrics, and means "to" oscillate the eccentricsincluding a shaft i for the eccentrics, a rock shaft on the crosshead, intermeslnnggears on sald shafts, an armon the rock shaft having a slot, at SllClB' block in said slt,a;disk on one oi the cranks having; a Wrist pm,- a connecting rodconncct- 5;i n1e' slide block With the wrist pin, and .7 adrockarm on the cross-head and 'pivotally connected to the slide block for-controlling variation'in theefi'ectiveradins of the slide f- 7 block.

13. A machine of the character described '7 comprising. in combination, a reciprocable;

cross-head, embossers carried by said'crosshead for embossing material, toggles carried by the cross-head connected to the embossers,

and means for operating the toggles includ ingfapair of eccentrics on the cross-head and a" double crank mot1on for oscillating the f eccentrics "having, provision for automatn cally' varyingthe effective radius-of one'o'f the cranks, .thereby to impart rapid movementsfto the eccentrics'to give the toggles a rapid'bucklin'g motion and quickly withdraw tion of the embossing operation.

17., A' machine tr the character described comprising, in combination, 'a reciprocable cross-head, acutter-head carried thereby having' cutters for dieing'out' articles from sheet material, an embosser-head carried by the cross-head-having embossers for embossing the materiahand means for controlling the embosser-head including means on" the cross head for positively causing the embossers to move down'with the cross-head in advance of thecut'ters, and for positively lifting the embosser-head, relatively to the cutter head V on completing embossing of thematerial.

r18. A machine-of the character described comprising, inv combination, a cross-head reciprocable vertically and horizontallysimultaneously, an embosser for embossing material, toggles carried by the cross-head connected to the embosser,-and means for autolmatically positively straightening and br ckling thetoggles to control the embosser.

19fA machine of theycharacter described comprising, in comblnatiom-a cross-head simultaneously reciprocable in two directions at anangle to each other, an, embosser for embossing material, toggles carried by the cross-head connected to the embosser, and 'i'neans for automatically positively straighte'ningand buckling the toggles to control the embosser.

T oMAs L THER GREEN.

the embossers from the material oncomple- "I L-A machine of the character described I 7 comprising, in combination, a reciprocable cross-head, an embosser-head carried thereby having embossers,-toggles on the cross-head I connected to. the embosser-head, and means for ad ust ng'the toggles to raise or lower to vary the depth of the embosser impressions on the material, and'that theembossersmay emboss materials of different thicknesses.

15. A machine of the character described theembosser-head relatively to the cross-head c'omprising-,'Tin combination, a reciprocable crosshead, acutter carried thereby for cut- ,ti I

for reciprocatingthe cross-head to cause the cutter to die out articles from sheet material,

"an embosser carried by the cross-head for embossing the material, and means for positivel controlling the embosser including togg e means connected tothe cross-head and embosser, and means connected to the toggle,

means for alternatelystraightening and b ickling the toggle means;

Ill) 

